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Finding the Fourth Proportional to 70,863.20, 97,791.84 and 39,033.20

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Solution

The fourth proportional to 70,863.20, 97,791.84 and 39,033.20 is: 53,866.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,863.20 : 97,791.84 = 39,033.20 : x
  2. Step 2: Convert to fraction form
    70,863.20/97,791.84 = 39,033.20/x
  3. Step 3: Cross multiply
    70,863.20x = 97,791.84 × 39,033.20
  4. Step 4: Simplify right side
    70,863.20x = 3,817,128,449.09
  5. Step 5: Solve for x
    x = 3,817,128,449.09/70,863.20
  6. Step 6: Final answer
    x = 53,866.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.